CubeFS Buckets API

openapi: 3.2.0
info:
  title: CubeFS S3-Compatible Buckets API
  description: The CubeFS ObjectNode provides an S3-compatible object storage interface that allows applications using AWS S3 SDKs and tools to interact with CubeFS storage without modification. The ObjectNode listens on port 17410 by default and supports standard S3 operations including bucket creation and deletion, object CRUD, multipart uploads, access control lists (ACLs), and pre-signed URL generation. Authentication uses AWS Signature Version 4 with access keys and secret keys managed by the CubeFS Master API.
  version: '3.3'
  contact:
    name: CubeFS Community
    url: https://cubefs.io/community/overview.html
servers:
- url: http://{objectNodeHost}:{objectNodePort}
  description: CubeFS ObjectNode S3-compatible API server
  variables:
    objectNodeHost:
      default: 127.0.0.1
      description: IP address or hostname of the CubeFS ObjectNode.
    objectNodePort:
      default: '17410'
      description: Listening port of the CubeFS ObjectNode.
security:
- awsAuth: []
tags:
- name: Buckets
  description: Bucket-level operations including creating, listing, and deleting buckets. In CubeFS, each S3 bucket corresponds to a CubeFS volume. Bucket names must be unique within the cluster.
paths:
  /:
    get:
      operationId: listBuckets
      summary: CubeFS List buckets
      description: Returns a list of all buckets owned by the authenticated user. Each bucket corresponds to a CubeFS volume. The response includes the bucket name and creation date.
      tags:
      - Buckets
      responses:
        '200':
          description: Bucket list retrieved successfully.
          content:
            application/xml:
              schema:
                $ref: '#/components/schemas/ListAllMyBucketsResult'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /{bucket}:
    put:
      operationId: createBucket
      summary: CubeFS Create a bucket
      description: Creates a new S3 bucket, which corresponds to creating a new CubeFS volume. The bucket name becomes the volume name. The request may include a LocationConstraint to specify the storage region.
      tags:
      - Buckets
      parameters:
      - $ref: '#/components/parameters/bucket'
      requestBody:
        required: false
        content:
          application/xml:
            schema:
              $ref: '#/components/schemas/CreateBucketConfiguration'
      responses:
        '200':
          description: Bucket created successfully.
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '409':
          $ref: '#/components/responses/Conflict'
    head:
      operationId: headBucket
      summary: CubeFS Check if a bucket exists
      description: Checks whether a bucket exists and the caller has permission to access it. Returns 200 if the bucket exists and is accessible, 404 if it does not exist, or 403 if access is denied.
      tags:
      - Buckets
      parameters:
      - $ref: '#/components/parameters/bucket'
      responses:
        '200':
          description: Bucket exists and is accessible.
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
    delete:
      operationId: deleteBucket
      summary: CubeFS Delete a bucket
      description: Deletes an empty S3 bucket. The bucket must be empty before deletion. Attempting to delete a non-empty bucket returns a 409 BucketNotEmpty error.
      tags:
      - Buckets
      parameters:
      - $ref: '#/components/parameters/bucket'
      responses:
        '204':
          description: Bucket deleted successfully.
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '409':
          $ref: '#/components/responses/Conflict'
components:
  schemas:
    Owner:
      type: object
      description: Owner of a bucket or object.
      properties:
        ID:
          type: string
          description: CubeFS user ID of the owner.
        DisplayName:
          type: string
          description: Display name of the owner.
    S3Error:
      type: object
      description: S3-compatible error response in XML format.
      properties:
        Code:
          type: string
          description: S3 error code such as NoSuchBucket, InvalidBucketName, or BucketNotEmpty.
        Message:
          type: string
          description: Human-readable error message.
        Resource:
          type: string
          description: The bucket or object that the error applies to.
        RequestId:
          type: string
          description: Unique identifier for the request, useful for debugging.
    ListAllMyBucketsResult:
      type: object
      description: Result of the list buckets operation.
      properties:
        Owner:
          $ref: '#/components/schemas/Owner'
        Buckets:
          type: object
          description: Container for the bucket list.
          properties:
            Bucket:
              type: array
              description: List of bucket objects.
              items:
                $ref: '#/components/schemas/BucketInfo'
    BucketInfo:
      type: object
      description: Information about an S3 bucket.
      properties:
        Name:
          type: string
          description: Name of the bucket.
        CreationDate:
          type: string
          format: date-time
          description: Timestamp when the bucket was created.
    CreateBucketConfiguration:
      type: object
      description: Optional configuration for bucket creation.
      properties:
        LocationConstraint:
          type: string
          description: Region or zone where the bucket should be created.
  parameters:
    bucket:
      name: bucket
      in: path
      required: true
      description: Name of the S3 bucket (corresponds to a CubeFS volume name).
      schema:
        type: string
        minLength: 3
        maxLength: 63
        pattern: ^[a-z0-9][a-z0-9\-]*[a-z0-9]$
  responses:
    NotFound:
      description: The specified bucket or object does not exist.
      content:
        application/xml:
          schema:
            $ref: '#/components/schemas/S3Error'
    Conflict:
      description: A conflict occurred, such as a bucket already existing or not being empty.
      content:
        application/xml:
          schema:
            $ref: '#/components/schemas/S3Error'
    Unauthorized:
      description: Authentication credentials are missing, invalid, or the signature does not match.
      content:
        application/xml:
          schema:
            $ref: '#/components/schemas/S3Error'
    BadRequest:
      description: The request was malformed or contained invalid parameters.
      content:
        application/xml:
          schema:
            $ref: '#/components/schemas/S3Error'
  securitySchemes:
    awsAuth:
      type: apiKey
      in: header
      name: Authorization
      description: 'AWS Signature Version 4 authorization. Format: AWS4-HMAC-SHA256 Credential={accessKey}/{date}/{region}/s3/aws4_request, SignedHeaders={headers}, Signature={signature}. Access keys are managed via the CubeFS Master API user management endpoints.'
externalDocs:
  description: CubeFS ObjectNode Documentation
  url: https://cubefs.io/docs/master/user-guide/objectnode.html